--- title: Drain Petrol From a Diesel Car — Broadwell canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/broadwell-gloucestershire/ location: Broadwell county: Gloucestershire latitude: 51.796870 longitude: -2.598550 service: Petrol in a Diesel Car updated: 2026-10-23 --- # Put Petrol in a Diesel Car in Broadwell? Don't Start It Never turn on the motor. If the petrol is still in your tank and your engine has not yet run, a drain is almost always all it takes — and that gets settled in the following few minutes, not by how much went in. Petrol in Diesel drains and flushes wrongly fuelled vehicles where they are, across Broadwell and the rest of Gloucestershire, on the forecourt, by the roadside or on a private drive. Call us before all else happens, and you will know what happens from there. ## Now what? Petrol in a diesel, in turn - Don't fire it up. Started anyway? Then never depend on it. Diesel in a petrol motor generally won't run, so the person stops and the wear stops with them. Petrol in a diesel? It starts. It idles. It moves off happily, for a few miles. Drivers get that muddled. It is not okay — your fuel system is wearing down every mile you drive. - Diesel burns, and before it ignites it protects — that high-pressure fuel pump, its injectors. Petrol does only the burning. So leave the ignition alone too: flicking it on is commonly enough to prime that system, and priming carries petrol from the tank into exactly those components. - That advice assumes a diesel fuel system copes with petrol by percentage. It doesn't. Put diesel on top and nothing at all is cleared; what you have is a fuller tank of the same mixture. And no, the octane makes no difference — super unleaded is just petrol. - A motor that has never shifted is the quickest one to sort out, so stay where you are if you sensibly can. Parked on the verge on Poolway Road? Hazards on, then keep it there. An awkward location suits us better than a started engine. - Our van turning up rather than circling turns on two things: a postcode that starts GL16 7, and whatever is nearest to you with a sign on it. Get both prepared before you dial. - What went in, roughly how many litres, and also whether the motor has run — those three facts shape the entire visit. Phone 0333 366 0103 and tell us. ## Can petrol be pumped out of your diesel at a forecourt? Most of this work begins at a pump, which means a large portion of it is done there. Our technicians work on petrol station forecourts routinely, with the owner's agreement, so if you are still at Texaco that's normally where the drain takes place. At a forecourt, it gets spotted with the motor never run, and no place else manages that. Fuel pulled out of the tank and through the filter, right to the high-pressure fuel pump, is what happens when your engine is switched on and the vehicle is driven to where it is now: the car park, the driveway or the lay-by, everywhere other than the forecourt. So the flush takes in the fuel filter and your lines as well as your tank. That's still not a catastrophe, and we sort it out where your car stands. What determines it is whether the ignition was turned in the seconds after the till receipt was checked. Wheel it out of the way if the staff volunteer, and they normally will. The next customer gets past the pump, and that is worth doing. Four car lengths is not worth a start. Diesel Peugeot 308. Some litres of unleaded. Driven a couple of miles. Switched off now, at Lidl. That is the enquiry we like, as the point under it is about quantity through the pump not hours on the clock. ## Service around Broadwell As a rural village, Broadwell gets a regular call, whilst its neighbours round about come with it on that same trip: Bakers Hill and Mile End, Coalway and Poolway, Palmers Flat. There are pages for most locations across Gloucestershire, and the ones mentioned above are merely the nearest neighbours — so yours being missing from the list says nothing at all about whether our engineers come. Close to a border, or somewhere your phone gets wrong? Call us to ask rather than presuming. The ground the page covers is on our map. Kerbside, forecourt, driveway, car park: every bit of that is ground we serve, and none of that requires the car to come to us. Nothing tells you, since from the driver's seat there's nothing to be warned about. Your diesel Mercedes C-Class will have felt entirely ordinary on the way back from Coalway Primary School, and they all do — which is the trap with petrol in a diesel rather than the reverse. Diesel in a petrol vehicle mostly refuses to run, stopping the driver and stopping the damage with them. Petrol in a diesel starts, idles, moves off as though nothing had happened, and all the while your pump works without the protection its fuel is meant to supply. Tell us roughly how far, and how hard. The harder counts more. ## Stuck on the roadside around Broadwell Not everybody gets the opportunity to pull over anywhere suitable. Hazards going in a lay-by somewhere, or pulled onto the verge beside South Road because you realised after setting off — we take that call often enough that it is the normal kind. Okay where you are? Remain by it. Not safe? Climb out and clear of it. It will frequently oblige. A diesel running on petrol limps along very willingly, and that's the catch: start it up to reach somewhere better and that blend goes further into the system with every mile driven. We will take the van to a difficult location without any fuss, and for the car that is a lot better than driving on. Here's what a job in the car park at The Dog House typically looks like. Our technicians arrive at your car, ask what went in, roughly how much, and whether the motor has run since — those three answers settle most of the work. Then the contaminated blend comes out of the tank, the fuel lines get flushed, and the fuel filter comes off where your Dacia Duster has a serviceable one. New diesel goes in and your system is primed. Then our engineers start the car, make sure it runs smoothly, and you drive away. ## Run it already? Pull over, then check below under 10 miles from Broadwell, the M50 is what counts here. A misfilled diesel will often take you onto it and some way along before anything seems wrong, while the symptoms when they come are typically a loss of power, a rough idle and some smoke rather than a tidy stop. Get off at the next safe junction, switch off, and do not start it to reposition. Long run? Anything close to the under 25 miles to the nearest city and you should assume the lot — filter, pump, injectors, all of it reached by the mixture. Say that on the call, as it affects what goes in our van. ## A bit about Broadwell Broadwell is a rural village in Gloucestershire, situated inland at an elevation of 223 metres, with detached housing being the predominant type of accommodation. Broadwell lies near the villages of Bakers Hill, Mile End, and Coalway, and is approximately 15.7 miles from Gloucester. Broadwell is a relatively small community, with a population of around 1310 residents. Broadwell is also within commuting distance to larger cities, being around 107.8 miles from London. ## The visit in Broadwell, step by step - We ask first, quote after. What went in? How much? Has your engine run? Those answers alter what the work actually is. - Our engineers empty that tank of all the polluted fuel. - Lines purged, filter cleaned. Whatever is left later is not the thing that started the issue. - Bleeding the system follows, once new diesel is in. - Our technicians start it and confirm it runs properly on new diesel. From that point, you are ready to drive away. Long-term damage is very rare when it has been spotted soon, and since everything is done where the car is, it never needs to go to a garage. Why so direct about leaving the keys alone? Because your pump is before the injectors, and a wearing one sends whatever it gives off on with the fuel. Call us. Leave the Vauxhall Astra close to Broadwell Memorial. ## A separate job: AdBlue in a diesel tank around Broadwell Don't crank it: that first rule stands whether what got in was AdBlue or petrol. What changes is this issue itself. Petrol does two things to diesel: dilutes it, and strips out the protection your fuel system relies on. AdBlue is urea in water, and in a diesel tank it causes rust and deposits instead. We cover both, and AdBlue removal in Broadwell has its own page with the details — including why it is usually the more serious of the two. Knocking, a lumpy idle, white smoke, a throttle gone soft. That's a misfuelled diesel Kia Sportage telling you what is wrong. Turn off where you have stopped, by The Church of the Good Shepherd or anywhere else, and never start the car to find a better spot. ## Budgeting for a petrol-in-diesel drain around Broadwell One number wouldn't be honest here, because this isn't one job. These are the things that change it: - This is the main one: whether the motor has been run, or driven. - Wrong fuel in, against what the tank takes — that proportion. - AdBlue or unleaded, whichever was put in. - Whether a technician can sensibly reach the vehicle and work on it, which hinges on where the vehicle is. Tell us your vehicle, the amount and if it has run, and you'll get a firm answer instead of a range. If it isn't urgent — your car is at home and going nowhere — is fine too. ## Broadwell drivers ask us these about petrol in diesel ## Fuel drains on a Broadwell petrol station forecourt Yes, and it is where a big part of this work takes place. Often, provided the site agrees: Central Garage, plus every other forecourt nearby. Say on the phone where precisely you have stopped. Whether our technicians can work in that place is something we answer on the spot. ## How much petrol is too much for a diesel? Litres are not the measure. Proportion is, and a lot more than either, it matters if anything has been run. Five litres into a nearly dry tank is not five into a full one, no. But both land on the same question in the end: has that mix been sucked right through, or has it not? ## Already driven it with petrol in the diesel? What then? Somewhere sensible, then stop, then switch off and leave it off. It's fixable much more commonly than motorists expect, even though driving is what moves the trouble from that tank into the pump and injectors — and the single most helpful thing you can do now is not restart it. ## Will a fuel drain void my warranty? A manufacturer's warranty outlasts a drain then flush done to a good standard, which is no alteration at all. Running a diesel on petrol is the thing likelier to cause an argument with one, which is another reason to leave the car turned off. ## Adding two-stroke oil, then driving home No. It belongs to a different issue from a bygone era, and petrol has weakened something no oil of that kind replaces. After that? Still petrol in that tank, and a pump that has to live with the stuff. ## Does petrol in a diesel have to go to a main dealer? You don't need one. The car is drained and cleaned wherever it is, with no need to take it to a main dealer. ## Is the car still with you? Never switch the car on again. Turn it off somewhere safe then leave it off, if you have already driven it. A stationary, cold car is the best position to be in, and this is recoverable from much more frequently than motorists expect. At the roadside, on the forecourt or at home — on-site fuel draining around Broadwell and across Gloucestershire.